Reaming and honing device



" Jan. 2, 1945- F. w. srrlaahuaocll(` ET AL. 12,366,158

REAMING AND HONING DEVICE Filed Jan.r 14, 1944 Patented .Ian.` 2, 1945 REAMINGAND HoNINlGDEvIcE y Vj FredlWlI Steenbockl Sylvan Grove,` and William `l.` l l Naegele,Lucasu-Kans.:`

Av1-)lication*.Ianary 14, 1944, serial Np; 518,274

` iclaim; (C1. srv-194,`

` Th'e present'invention relates to improvements in. `reaming .on honing.,too1s,and aims to` provide amnovellrotary typelot tool` of this character adaptedto use-sheetsi of. abrasive materialsuchI aseemerycloth .and the like yfor, `carrying out theI cutting or, abrading" function.`

Accordingly a, primary` object of theinvention is tov devise. a lnovelconstruction of toollof this` `type-in which the'ssheets ofgabrasive materia-l are `so utilized as` to` promote not `only ready i and ,l convenientrenewal .orf replacement of said umate- A riaL-as.A required `but alsoctoA `feed-.1 any required'H amount of; the-material tozthe; exteriorofrthe tool whereby the .i-size,` or, diameterrof :the tool may be L suitably `variecibto meetadilerent.` operating re,-Av

quirements;i I

A further object of theinvention'isvtopro videai practical ,andzmefcient construction in Which'nimprovedmeans,isprovided for securing the inner edge of the sheetof abrasive material to `the aXisof, the tool, said means being adapted for easy and 'ready adjustment as well" as for securely clamping the sheet inplace.

It is further sought to provide a` construction in which the metallic parts, such as the principal sleeve element may be kept as small as practicable, or made of light and relatively thin stock in order to adapt the tool for light duty and for l working in close quarters.`

Another detail of the improvement comprises use of differentgrades of abrasive material, in which` operation a supplemental sheet of such material may be readily mounted in operative position on the tool by beingsimply inserted so `as to be caught and held by `engagement with the free edge of the sheet of material already in place on the tool.` l

with the foregoing `generarela-mens `in view the invention will now be described by reference to the accompanying drawing illustrating one practical form of the tool which we have devised for embodying our features of improvement, after which those features vand combinations regarded by us as novel and patentable will be particularly set forth and claimed.`

In the drawing- Figure 1 is a perspective view of `a tool cont structed `in accordance with our invention;

Figure 2 is a longitudinal sectional View of the same' (on a somewhat larger scale); and

Figures 3, 4 and 5 are` transverse sectional views, representing sections taken on the lines 3 3, 4--4 and 5-5, respectively, of `Figure 2,

but with Figure 5 illustrating the application the exterior of the tool. l .Referring now to `the drawing in. more .,detail,

this" illustrates our improved tool construction` asycomprising a central aXis inY the form of`a shaft 8hav`ing a shank or drive end portion I0), which4 is provided with, a fixed abutment or col;-`

` lar element I2.` This collar is `reduced ononer `faceto forman annular shoulder I4 ofappro-` priate diameter for fitting within one endlof` a metallicsleve I5, which is formed with alongi-,

tudinal` and somewhatAv angular slot I6 for allowing, the passage ofl `a web or sheet of; abrasive i material, suchasernerycloth I8, asclearly` il`-I l i lustratedin Figure 3. `The `other endA ofil theV I sleeve I5 also.. lits, over "a similar shljxulderJZIlA forming partei?.` a` movable collar element 22Y `whichisbacked up by` a clamping nut23falso.. mount'edLon the corresponding end of'thelshaft. IU, which is threaded,` (as indicated atlEIDVforA the operation of said nut in holding the collar` 22 in place as required for maintaining the sleeve l I5 in securely clampedrelation between the co1- lars I2 and 22 when the tool is put in operation.

For securely clamping the inner end of the l tucked and then engaged by a clamping or re- 30 t taining rod 28, one end of which is removably `inserted into an opening or recess 30 within the xed collar element I2, while the opposite end of said rod is received withinaJ flaring cup opening 32 provided in one face of a nut 34 `also mounted on the thread 24, whereby as the nut l 34 is screwed up on the'shaft the rod 28` is crowded down into the groovel26 and thus into firmly clamping relation to the inner end of the emery sheet I8, as clearly `represented in `Figure 2 of the drawing.

, When the sheet of emery cloth is thus prop- `erly `secured to the shaft as just described, the

cloth is then Wound around the shaft, reel fashion, and the sleeve I5 is pushed endwise over the rollof cloth in telescoping relation therewith, but t leavingtheouter orfree end `ofthe sheet pro- `jecting out through the longitudinal slot I6.

Through this slot I6 the cloth is then pulled in order to bring a suicient quantity or number of` turns of the cloth to the outside of thelsleeve. After a proper amount of the material has been pulled into place outside the sleeve I5, the sleeve is then clamped tightly between the end collars in place against `the coll by screwing the nut 23 lar 22, as shown, l

TENT OFFICE 1 Thetool may then be operated as a reamer or honing device in the usual manner, by rotation in the direction of the arrow in Figure 3, which operation is carried out without disturbing the wound relation of the cloth or abrasive material I8, other than to maintain it in its highly wound relation upon the shaft and around the outside of the sleeve. In case it should be desired to change the outside diameter of the device, for either increasing or diminishing the size of same, it is apparent that this may be readily accomplished by simply readjusting the roll to vary the number of turns of the cloth material on the outside of the sleeve I5, in a veryv convenient manner. n

For facilitating the insertion of the tool into operative position,`it is preferred to taper one end of the sleeve I5 slightly, as indicated in Figures l and 2; and for further promoting such ready insertion of the tool, `one corner of the projecting end of the sheet I8 may be cut or torn away, as indicated at I8' in Figure 1.

Another advantage which characterizes such application of the sheet of abrasive material is the fact that this facilitates the use of supplementalsheets of abrasive material, such as indicated at 36 in Figure 5, inasmuch as such supplemental sheets may be held securely in place by simply lapping one edge of it either above or below the exposed end of the rst sheet I8 and'then Ywinding up the roll of material until thedesired amount of the sheet 36'is left outside the sleeve I5 for arriving at a proper diameter of the tool. kThis feature is of importance where a nner grade of abrading cloth is` necessary for finishing purposes, and which operation may thus be carried out with the same tool,"with` the mere application of the supplemental sheet of the required grade to the outside of the first sheet and then Winding up the l two sheets to the required extent.

It will thus be apparent that we have devised a practical and highly eicient type of tool for the carying out of various abrading operations, such as in reaming or honing and the like; and

besides the various advantages described in the 1 foregoing, it is .also obvious that fresh portions of the abrasive cloth material may be fed out as required, through the slot I6 of the sleeve I5, and also that an entirely new sheet of the material may be mounted in place to take the place of a worn-out sheet by manipulation of the clamping means 28 and 34, ina quick and convenient manner, as will be readily understood from the foregoing description.

While We have illustrated and described what is now regarded as the most effective means for practice and embodiment of` our invention, we desire to be understood as reserving the right to make all such changes or modiflcations as may fairly be deemed to fall within the scope of the invention as dened by the appended claim.

We claim:

An abrading or honing tool comprising a central shaft having a drive end, a xed collar on said drive end portion of the shaft, a removablev sleeve for enclosing a sheet of abrasive material A in coiled relation to said shaft and formed with 

